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No alerts are sent by ActiveIQ Unified Manager because of memory limitation

Last Updated:

Applies to

  • ActiveIQ Unified Manager 9.6+ (UM)
  • Virtual Machine (VM)


  • UM stops sending alerts randomly
  • Acquisition is not working or delayed
  • The UM VM needs to be restarted and the issue is temporary resolved
  • Errors appear in the /var/log/ocum/ocumserver.log

2020-07-01 11:57:51,753 ERROR [WrapperStartStopAppMain] c.o.u.s.RemoteAppSessionFactory ( - RemoteAppSessionFactory - Failed to communicate with the server (ejb:mega-app/server-core//SummarySessionEJB!com.onaro.sanscreen.server.sessions.SummarySession) - no retries left: EJBCLIENT000409: No more destinations are available org.jboss.ejb.client.RequestSendFailedException: EJBCLIENT000409: No more destinations are available


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